Rapid light curves of Greenland Ice Sheet glacier algal communities, 2024

Dataset includes 2 sets of data on Streptophyte glacier algal photophysiology as assessed through Pulse Amplitude Modulation (PAM) fluorometry of communities sampled from the surface of the Greenland Ice Sheet during summer 2024. The first set of responses are of communities sampled from fully exposed versus shaded regions of ice measured through rapid light curve techniques after 5 minutes of dark adaptation. The other set of responses are the same surface ice samples measured after 24 hours of dark-adaptation and melt. Analysis of rapid light curve datasets to highlight fine-scale heterogeneity in glacier algal in-situ photophysiology are published in Williamson et al. (2024). This marks the first time an in-situ method has been developed to map glacier algal photophysiology relative to dominant abiotic stressors.

本数据集包含两套针对链型藻类（Streptophyte）冰川藻光生理的检测数据，相关数据源于2024年夏季从格陵兰冰盖表面采集的群落样本的脉冲振幅调制（Pulse Amplitude Modulation, PAM）荧光法检测结果。第一组检测数据对应经5分钟暗适应后，采用快速光曲线技术测定的、取自完全暴露与遮阴冰面区域的群落样本；第二组检测数据则来自同一批冰面表层样本，经24小时暗适应及融解处理后测得的结果。针对快速光曲线数据集的分析，旨在阐明冰川藻类原位光生理的精细尺度异质性，相关研究成果已发表于Williamson等人（2024）的论文中。此项研究首次开发出可针对主导非生物胁迫因子绘制冰川藻类光生理图谱的原位检测方法。